Duplex disk distributor for cylinder printing presses



c. L. LOW 1,748,358 DIJPLEX DISK DISTRIBUTOR FOR CYLINDER PRINTING PRESSES Feb. 25, i530.

Filed March 12, 1929' s Sheets-Sheet 1 INVENTOR Chas L.Low

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Feb. 25, 1930., c ow v DUPLEX DISK DISTRIBUTOR FOR CYLINDER PRINTING PRESSES Filed March 12, 1929 3 Sheets-Sheet 2 INVE NT OR ChausL.Low

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ATTORNEY I Feb. 25, 1930. Low 1,748,358

DUPLEX DISK DISTRIBUTOR FOR CYLINDER PRINTING PRESSES Filed March 12, 1929 s Sheets-Sheet 3 Fligl4 |NVENTOR C 11 a5 L.LOLU' ATTORNEY Patented Feb. 25,1930

.- 'This invention relates to printing presses CHARLES LJLOW', OF FRESNO, CALIFQBNIA, ASSIGNOR TO LISENBY MANUFACTURING COMPANY, OF FRESNO,'CALIFORNIA, A CORPORATION i DU'PLEXQDISK DISTRIBUTOR FOR CYLINDER PRINTING PRESSES Application filed March 12, 1829. Serial No. 346,327.

of thattype having a reciprocating bed and a revolving cylinder to. cooperate with the type set up on the type form of the bed, such as 'my Patent No. 1,587,968 datedJune 8th,

1926; thepresent invention particularly revlatingto the ink distributing, mechanism of such a, press. u c

In j ob. printing it is frequently desired to "do two-color work onthe matter printed.

lVith the ordinary presses this must be done by running the matter through the press twice, once" for each color. In the type of press above mentioned the desired result is: obtained by providing two 1nk fountalns', one

at each end of the press. This. is an arrange.-

m'entwhich of course requires. cooperating doctor, and form rolls for each fountain and a separateqoperating mechanism for such "rolls of eachfountain. This not only adds considerably to the number of parts and complexity of the 'press butv of course increasesthecost of manufacture,.besides necessitating making thev press-of. considerable length for its actual. printing capacity:

The principal object of my, present inventionis to avoid the above costly and coinpl'ex structure by providing atwo-color ink ing arrangement for a press of this char acter having only a single ink. fountain and a single doctor roll and set of form rolls to cooperate therewith. J "The arrangement is such that only one colorv may be used insteadof two if desired, in. which case. the entire transverse areaof the, ink plate isavail-able for the 1one'color, or theftwo colors may be i blended. The ink distributing mechanism is such that the bedmay move through a relatively short distance while maintaming the distributed over the necessary lengthof the inkreceiving plate of the bed ;"so' that in conjunction withthe. omission of" the, fountaijnsat. both ends the press may be made 7 very compact as to length.

produce a simple and inexpensive device A. further object of'the invention is to and yetone which, will be} exceedinglyeh fectivefor the purpose, for which it is deflsigned. g L v k I V These objects I accompllsh by means of such structure and relative arrangement of parts as will fully appear by a perusal of the following specification and claims.

In the drawings similar characters of reference indicate corresponding parts in the several views Fig. 1 is a fragmentary top plan view of a press showing my improved 1nk distrlbutring mechanism.

F1g. 2 1s a longitudinal section on the, line 22 of Fig. 1.

Fig. 8 is a fragmentary transverse section on the line 33 of Fig. 1.

Fig. 4 is a fragmentary side elevation. of

the vibrator-roll control mechanism.

Referring now more particularly to the characters of reference on the drawings, the numeral 1 denotes the main frame of the press which supports longitudinally extending' tracks 2 on which the bed 3 is slidably mounted a transverse printing cylinder 4 being mounted on the frame intermediate its ends and above the bed. The bed comprises :1.

- type form portion 5 at its endnearest the cylinder and a raised ink plate 6 at the opposite end; a pair of transversely spaced ink distributing disks '7 being turnablymounted in said plate and being set flush with the upper surface thereof.

Supported by the frame above the bed and just ahead of the cylinder isa pair of longitudinally spaced form rolls 8, freet'o rotate and set at such a-level "that they will" alternately engage type mounted on the bed and the ink plate disks.

A vibrator roll 9 is superimposed on and engages both form rolls; said roll being rotated so as to cause the rolls 8 to rotate with the reciprocation of the bed, by gearing 10; secured thereto on one end and meshingwith; a rack 11 fixed in connection with the bedv along its adjacent side. At the end of the frame adjacent the ink plate a transverse ink fountain 12 is mounted, which is preferably of the type shown in my Patent No. .1,681',299

dated April 21st, 1928. This fountain has a.

fountain roll 13 turnably mounted in connection therewith and is divided into two i par v compartments or ink receptaeleg b a partition 14 engagmg the roll. This partition is positioned in longitudinal alinement with the space between the disks and is slightly wider than said space.

The ductor roll 15 is turnably mounted on arms 16 projecting radially from a shaft 17 journaled on the frame, said shaft being arranged to be rotated through a certain arc in timed relation with the reciprocation of the bed, so as to cause the ductor roll to be alternately moved from engagement with the fountain roll to engagement with the adjacent portion of the ink plate and disks when the bed is advanced to its limit of movement adjacent the fountain, as indicated in Fig. 3.

The means for intermittently rotating the fountain roll and imparting the necessary movement to the ductorroll supporting shaft may be of any suitablecharacter such as, shown in the above mentionedPatent No. 1,587,968, and form no part of this invention. The bed is reciprocated through a certain distance, or so as to move the ink plate from a position just ahead of the fountain to a positionunder the form'rolls 8 by suitable means actuated by the rotation of a transverse drive shaft 18 mounted onthe frame under the bed.

Such means is shown diagrammatically in Fig.2 and consists essentially of a crankarm 19 on the shaft, a connecting rod 20 from the crank-arm to a vertical rocker-arm 21 pivoted at its lower end on the frame, and a link 22 from the upper end of the rocker arm to the bed. I c

' The vibrator roll 9 in addition to constantly rotating with the reciprocation of the bed may or may not be also moved length wise, so as to distribute the ink properly along the surfaces of the rolls 8, by the following means: Secured tofone end of the.

vibrator roll shaft 23 is a grooved collar 24 engaged by. one endof an arm25 whichprojects radially from a vertical shaft 26 journaled in connection with the frame 1. An arm 27 projects from thelower end of the shaft at an angle to the arm 25 and is flexibly tending rod 28. I

At its other end this rod is flexibly connected to a pin 29 disposed-parallel to the shaft 18 and adjustably'fixed in a radial slot 30 provided in a disk 31 secured to the adjacent end of the shaft 18. 'This slot ex:

tends to the axial line of the shaft so that v the pin may be set concentric with the shaft if desired. By means of this arrangement it will be seen that if the pin is secured in offset relation to'the shaft the rod 28 and parts connected thereto will be reciprocated through a certain distance with the rotation of the shaft. If, however, the'pin is set at I the vibrator mechanism of the vibrator roll the center ofthe shaft no movement of the rod will take place andconsequently the'vibrator roll will not be moved lengthwise.

relation to the form rolls.

only sufficient to cause the ductor roll to ,e'n gage only small segmental portions of the distributor disks, means is provided for imparting lntermittent rotative movement tov said disks,'between the periods of engages ment of the ductor rolltherewith, so as to constantly present different segmental portions of the disk for engagement with the ductor roll and: thus insure that the entire are complete circular flanges 32 provided with downwardly projecting ratchet teeth 33. Transversely spaced pawls 34 project upwardly through slots 35 provided in the bottom ofthe ink plate 6 to constantly e11- gage theratchet teeth of both disks. The pawls are independently pivoted on the upper ends of arms 36 which are fixed in common on a; transverse shaft .737 journaled' in a bracket 38 depending from the'ink plate. One arm has a substantially horizontal extension 39 projecting therefrom inlthe direc-. tion of the type form portion ofthe bed and carries a roller 40 on its outer end positioned to engage and ride along an upwardly slope Y ing cam track ll secured to one of the bed supporting tracks2. I This cam track is. so positioned and shaped that the roller will engage the lower end of the same as the bed approaches the fountain, said roller riding upon the trackwith' the advancing movement of the bed so as to cause the arms to beswung forwardfor c a certain distance, and'to be then heldagainst movement when the bed completes its travel toward the fountain and the ductor roll moves into engagementwith the disks. The disk ratchets and pawlsare so arranged that with the forward swinging movement of the a V pawlsupporting arms as above described, said disks will be rotated through a certain are. 7

tion a spring 42 associated with one of the arms 36 retracts said arms with respect to their disk rotating position, suchretractive movement being limited by a stop 13 pro- 7 110. As the bed moves in theopposite direcj vided in connection with the bracket 38. w

Since the fountainpartition is disp'osedin a longitudinal plane between the disks as before stated it will be seen that each disk re ceived a supplyof ink only from the corre spending receptacle of the fountain and there is no chance for the differently colored inks to get onto the wrong disks; and the ink from in segregated the two disks is transferred When two different colored inks are used is positioned so as to be inactive unless itjis desired to blend the colors. 1

sections are filled with the same ink and the I vibratorroll is permitted'to function.

My improved inking structure may therefore be used for one or two colors as required without any changes or additions being necesviceas substantially fulfills the objects of the invention asset forth herein.

W'hile this specification sets forth in detail the present and preferred construction of the device, still inpractice such deviations from such detail may be resorted to as do not form I a departure from the spirit of the invention,

as defined by the appended claims.

' 7 Having thus described my invention what I claim as new and useful and desire to secure by Letters Patent is: e j

1. In a cylinder press, a reciprocable bed, an ink plate provided with the bed'at one end thereof, atransverse fountain disposed beyondthe plate end of the bed having a-foun-- tain roll mounted in connection therewith, a partition in the fountain'and engaging-the roll to provide two separate ink receptacles, turnable disks mounted in the plate in transversely spaced relation to each other ;-the partition being disposed in longitudinal alinement with and wider than the space between the disks, and a movable ductor roll for alternate engagement with the fountain roll and disks.

2. In a cylinder press, a reciprocable bed,

i an ink plate provided with the bed at one end the'reof,'a transverse fountain disposed beyond the plate end ofvthe bed having a foun .tain roll mounted in connection therewith, a

partition in the fountain and engaging the roll to provide twoseparate ink receptacles,

Q turnable disks mounted in the plate in trans- -versely spaced relation to each other; the a; partition being disposed; in longitudinal alinement with the space between the disks,

a movable ductor rollfor alternate engage-. ment with the fountain roll and segmental portions. only of the disks, and means for intermittently'rotating the; disks to cause dif-' ferentlportions of the area thereof. to be successively engaged by the ductor roll. I I V 3. A structure as in claim 1, with means for I intermittently rotating the disks.

movable ductorrollf'for alternate engagement with the fountain roll and a segmental portion of the disk,'means for reciprocating 'the' bed, and meansfunctioning with the. movement of the bed toward the fountain and ductor roll for then imparting rotation to the disk, and for causing such rotation to be halted when the bed is on the last portion of its movement toward the fountain whereby to enable the ductor roll to engage the disk while the latter is stationary.

5. In a cylinder press, a reciprocable bed, an ink plate provided with the bed at one end thereof, a transverse fountain disposed beyond the plate end of the bed having a fountain roll mounted in connection therewith, a disk turnably mounted on the ink plate, a movable ductor roll for alternate engagement with the fountain roll and a segmental portion of the disk, means for reciprocating the bed, a circular flange depending from the disk concentric with its axis of rotation, ratchet teeth about the bottom edge of the flange, a pawl engaging the teeth, an arm member on the upper end of which said pawl is pivoted, said member being pivoted intermediate its endsin connection with the ink plate, a roller on the lower end of the arm member, and a horizontal cam-track mounted in a fixed position relative to the bed and engaged by the roller as the bed approaches the fountain end of its stroke and arranged to cause the arm member to be first swung so as to advance the pawl against the teeth and rotate the disk, and to then cause the arm to be held relatively stationary as the bed travels over the last portion of its stroke toward the fountain.

Intestimony whereof I affix my signature.

. CHARLES L. LOW. 

